BOREAS in 1997

BOREAS in 1997 - BOREAS in 1997: Experiment overview,...

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    BOREAS in 1997: Experiment  overview, scientific results, and  future directions Sellers, P.J., et al. Journal of Geophysical Research, Vol. 102, No. D24, December 26, 1997.
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    Boreal Forests Encircles the Earth above 48°N Second in areal extent only to tropical forests Occupies 21% of the Earth’s forested land surface Contains 13% of the carbon stored in biomass and 43% of the carbon stored in the soil Expected that warming will be greatest among these higher latitudes (43° – 65°N)
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    Importance of study Large size of forests combined with magnitude of future climate changes could have significant effects Feedbacks, changes in carbon storage, changes in ecological function of the ecosystem, etc. Our limited understanding of the exchange of energy, water and carbon between the atmosphere and these land surfaces limits our ability to predict these future changes Also limits the reliability of climate models
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    Interactions between the boreal forest and the  atmosphere Physical climate system processes Carbon and biogeochemistry Biophysics Ecology
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    Objectives 1. Improve the process models that describe the exchanges of radiative energy, water, heat, carbon, and trace constituents between the boreal forest and the atmosphere Addressed at local scale (centimeters to a few kilometers) 2. Develop methods for applying the process models over large spatial scales using remote sensing and other integrative modeling techniques Addressed at regional scale (10-1000km) * Need to connect processes at these two scales
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    Multi-scale measurement strategy Multi-scale nested design which permits knowledge at one scale to be translated and compared to that obtained or inferred at different scales
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    Experimental Design Experiments took place over two years, 1994 and 1996 Project included 85 science teams and over 300 scientists Individual projects divided into 6 groups Airborne fluxes and meteorology Tower fluxes Terrestrial ecology Trace gas biogeochemistry Hydrology Remote sensing science
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BOREAS in 1997 - BOREAS in 1997: Experiment overview,...

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